Decagonal quasicrystals in the Zn–Mg–R alloys [formula omitted]

We report formation of decagonal quasicrystals in the Zn–Mg–R (R= rare- earth and Y) alloys. Exemplified by the R=Dy alloy, the composition of the decagonal phase was determined as Zn 58Mg 40Dy 2. The decagonal phase is thermodynamically stable, and probably forms through a peritectic reaction betwe...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2001-05, Vol.304, p.867-870
Main Authors: Sato, Taku J., Abe, Eiji, Tsai, An Pang
Format: Article
Language:English
Subjects:
Decagonal quasicrystal
Stable quasicrystal
Zn–Mg–R systems
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Summary:We report formation of decagonal quasicrystals in the Zn–Mg–R (R= rare- earth and Y) alloys. Exemplified by the R=Dy alloy, the composition of the decagonal phase was determined as Zn 58Mg 40Dy 2. The decagonal phase is thermodynamically stable, and probably forms through a peritectic reaction between the crystalline Zn 66Mg 32Dy 2 and Zn–Mg liquidus phases. The existence of the decagonal phase was confirmed for R=Y, Ho, Er, Tm and Lu in addition to the Dy alloy.
ISSN:0921-5093
1873-4936
DOI:10.1016/S0921-5093(00)01623-3